I am selling my collection. I started collecting in the 70s and want to sell them all before I die.  I have around 70,000 of them and will list them in alphabetical order, then move on to magazine and treasury sized comics.  All photographs are of the actual comic and all comics come in bags and have a backing board.  Most are read or well read, some are in great condition but I cannot and will not offer a grade.  I also cannot accept returns so please bid only on those comics you actually want.   
I can and am happy to combine shipping on multiple auctions.  Cost increase regularly and I may not have updated this guide at the time you read it.  Minimum comic weight with the mailer is 8 ounces costing 6.95-7.15, 9-12 ounces 7.75-8.00, 13-16 ounces 9.55 and above that there is the USPS padded envelope costs 11.40 and will hold about 8-9 comics and then the USPS flat rate medium box 18.40 holding up to 40 comics.  Regular sized comics weigh about 3 ounces each, annuals and other heavier comics weigh up to 15 ounces.  I am also using mailers that cost $1.00 each and am passing that expense along to the buyer.